• 동의생리병리학회지
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• 제22권3호
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• pp.540-541
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• 2008

The aim of the present study is to determine clinical efficacy and adverse reaction of yugan-tang. We compared symptoms and liver function test results of 160 patients with damp-heat type liver disease in before and after taking yugan-tang. The patients took 200ml yugan-tang two times daily for three months. Then we analyzed these datas statistically. The overall therapeutic effect was "markedly improved" in 70 of 160 patients (43.75%) and "improved" in 75 of 160 patients (46.88%). yugan-tang markedly improved damp-heat type liver disease, especially jaundice, abdominal distention, hypochondriac pain, nause, vomiting and anorexia. Alanine aminotransferase (ALT) level and total bilirubin (TBIL) level were within normal limits at baseline. But albumin-globulin ratio (A/G) level was not changed markedly. I think that yugan-tang is worth applying widely to clinic.

• 한국응용약물학회:학술대회논문집
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• 한국응용약물학회 1998년도 Proceedings of UNESCO-internetwork Cooperative Regional Seminar and Workshop on Bioassay Guided Isolation of Bioactive Substances from Natural Products and Microbial Products
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• pp.22-26
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• 1998

The medicinal plants have been used as drugs for thousands of years and many of them are used in traditional medicines. How long are these medicinal plants used as drugs\ulcorner Ebers papyrus (BC 1550) is one of the oldest documents which described more than 700 kinds of herbal drugs. Some of herbal medicines described in the papyrus are familiar and ‘Opium’ is a good example. Some of the drugs described in the papyrus are hardly recognized as drugs by the standard of present day. We can trace back the history of medicinal plants from quite different approach. The investigations on group behavior of chimpanzees in Africa by ‘The Primate Institute of Kyoto University’ has revealed that chimpanzees suffered illness take specific plants which are not taken as daily food stuff. The chemical analysis clarified that the plants contain very bitter constituents and suggested that chimpanzees take medicinal plants to cure their illness. It is worth to note that young chimpanzees just learn what elder ones take when they suffer illness, but elders never teach to their children! It is no doubt that the chimpanzee's medicinal plants were found by random, and try and error screening. The medicinal plants found in this study have been used as herbal medicines by the peoples in the region.

• Agribusiness and Information Management
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• 제7권2호
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• pp.19-26
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• 2015

Recently, food delivery apps are seeing rapid growth into a market worth 1 trillion won under a simple but unique business model of connecting nearby restaurants with consumers via smartphone. Though basic similarities with social commerce exists in aspects such as mail-order sales intermediaries, startups, types of services and market competition structure, food delivery apps resemble social commerce in many ways in that they use excessive marketing to secure market dominance, causing a spike in consumer complaints. If the excessive marketing and increase in customer complaints are not rectified, the food delivery app could also see rapid decline as it gradually grows distant from consumers, just like social commerce. Accordingly, this study will identify the factors consumers recognize as important for continuous use vis-a-vis social commerce and food delivery apps to perform an empirical analysis on what areas need improvement. After deriving the four upper factors of product, information system and service along with eight sub-factors by referring to existing literature, the areas with opportunity for improvement were derived through satisfaction level and relative importance evaluation. The results of this study present a strategic direction for maintaining customers of social commerce and food delivery apps.

• 한국인구학
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• 제14권1호
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• pp.35-46
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• 1991

Improvements in various health indices have been ushered in, along with soaring economic growth in the last few decades in Korea. Life span of Koreans at present stands at somewhere around age of seventies. It seems of worth to elucidate some facets of health profile of historic Koreans during Yi dynasty encompassing about five hundreds years between the 14th and 19th century. Datas on health of historic Koreans are meager with exception for sovereigns for whom royal archives have been preserved intact through centuries. Though the health environments for monarchs are, no doubt, incomparable to that of the grassroot levels during the same period, health profile of monarchs would facilitate to assess health indices for historic Koreans during Yi dynasty. Arithmetic average of life span of 25 consecutive Kings(omitted the last two Kings under Japanese control) is 44.6 years of age 81 year old for King Yongjo and 16 year old for King Danjong, representing two extremes. The principal causes of death are septicemia, subsequent to infections of soft tissue and ether organs(8 in number, one-thirds of all). Secondly, both epidemic disease and vascular accidents caused deaths of three Kings each. Two kings succumbed to diabets and one suicide. The causes for the remainder, eight kings are hardly ciarified. The monarchs who contributed in establishment of new Yi dynasty with highspirited and disciplined survied beyond their fifties and sixties. In contrast, those who reigned during mid - era of the dynasty at its culmination succumbed to death in their young adulthood, most likely due to their indulgence in court life.

• 한국컴퓨터정보학회논문지
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• 제7권2호
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• pp.187-195
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• 2002

본 연구에서는 효과적인 e-비즈니스를 실현하기 위해서 기업의 기간시스템으로 간주되는 ERP의 구현사례를 중소기업을 중심으로 분석을 하였다. 특히 기업에서 ERP를 구현하기 위해서 현재의 경영환경 분석을 바탕으로 BPR의 활동을 집중적으로 분석하므로 ERP구현 효과와 시스템 활용실태 및 평가를 도출하게 되었다 즉 BPR활동을 수행한 본 연구의 CM콘크리트사의 ERP구현사례의 분석에서 알 수 있듯이, BPR활동은 성공적인 ERP구현의 필요충분 조건으로 향후 ERP도입을 계획하고 있는 중소기업에게 성공적 ERP시스템 구현은 물론 기업정보시스템의 실행성과를 높일 수 있는 중요한 지침을 제공할 수 있다고 판단된다.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제10권1호
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• pp.1-13
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• 2007

지난 30년 동안 연구자들은 교수-학습에서 사용할 수 있는 뇌에 대한 많은 정보들을 제공하였다. 연구에 따르면, 학생들은 다양한 경로를 통해서 정보를 받아들이고 자신에게 익숙한 학습 감각을 사용해서 이 정보를 표현한다고 한다. 그러나 수학교실에서는 시각적 자료가 주로 사용되는 것이 현실이다. 본 연구는 수학 학습에서 학습 감각이 갖는 시사점을 고찰하는데 목적이 있다. 본 연구에서는 Politano & Paquin의 분류에 따라 학습 감각을 시각적 감각, 청각적 감각, 운동적 감각으로 구분하고, 초등학생 141명, 중학생 117명, 고등학생 145명, 대학생 99명을 대상으로 학습 감각을 조사하였다. 학년 수준에 따라 학습 감각에 차이가 있는지를 알아보기 위해서 t-검정을 실시하였다.

• 천문학회보
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• 제41권1호
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• pp.73.2-73.2
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• 2016

We present the results of KaVA SgrA* observation together with Takahagi(32m), Yamaguchi(32m) and Nobeyama(45m) telescopes at 22 and 43GHz, respectively. In early 2014, G2 cloud was expected to encounter with SgrA* and to make a significant flux variation, but it has not been measured yet. So it's worth to check our amplitude calibration method to confirm if we have a missing flux caused by uncertainty in measuring it. We have tested both a standard method using system noise temperature(Tsys) with antenna gain information, and a template method in order to calibrate antenna gain using nearby maser source. As a result, we found that the latter method is useful for antennas which have inaccurate gain information or poor Tsys measurements, and is especially effective for sources at low elevation like SgrA*. In addition, the comparison shows that the amplitude calibration by standard method can be improved up to 10% with a correction factor using a template method. This result implies we can get more accurate flux from a standard method when any maser source not exists around target.

• 대한조선학회논문집
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• 제57권3호
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• pp.124-132
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• 2020

The purpose of this paper is to establish the basic procedure and method for selection of preferred anti-fouling paint considering economic analysis according to ship's speed loss based on ISO 19030 that has been published in 2016 to prescribe practical methods for measuring changes in ship specific hull and propeller performance. In this study, six (6) anti-fouling paint products have been assumed for alternatives with each target maximum average speed loss and carried out comparison of the alternatives and sensitivity analysis in assumed conditions for selection of the preferred alternative.

• 대한소아치과학회지
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• 제25권1호
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• pp.1-18
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• 1998

The purpose of this study was to analyze comparatively the effect of various root pretreatments prior to delayed replantation. Total 6 beagle dogs were used for the experiment and 8 teeth per each animal were treated by several prepared regimens before replantation. After 3 & 6 weeks of experimental periods, animals were sacrificed by perfusion method. The results obtained from the present study can be summarized as follows: 1. All root pretreatment regimen used in this experiment showed effectiveness in the periodontal repair of delayed replanted teeth. 2. The teeth treated by the regimen of stannous fluoride combined with tetracycline revealed more favorable tissue response and less frequent root resorption or ankylosis than other groups. 3. The long term effect of Group IV-regimen seems to be worth further study since the result at 6-weeks showed the significant progress in periodontal healing when compared to 3-week result which was not indicated in any other group

• International Journal of Reliability and Applications
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• 제3권1호
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• pp.1-16
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• 2002

In reliability engineering, the bathtub-shaped hazard rates play an important role in survival analysis and many other applications as well. For the bathtub-shaped, initially the hazard rate decreases from a relatively high value due to manufacturing defects or infant mortality to a relatively stable middle useful life value and then slowly increases with the onset of old age or wear out. In this paper, we present a new two-parameter lifetime distribution function, called the Loglog distribution, with Vtub-shaped hazard rate function. We illustrate the usefulness of the new Vtub-shaped hazard rate function by evaluating the reliability of several helicopter parts based on the data obtained in the maintenance malfunction information reporting system database collected from October 1995 to September 1999. We develop the S-Plus add-in software tool, called Reliability and Safety Assessment (RSA), to calculate reliability measures include mean time to failure, mean residual function, and confidence Intervals of the two helicopter critical parts. We use the mean squared error to compare relative goodness of fit test of the distribution models include normal, lognormal, and Weibull within the two data sets. This research indicates that the result of the new Vtub-shaped hazard rate function is worth the extra function-complexity for a better relative fit. More application in broader validation of this conclusion is needed using other data sets for reliability modeling in a general industrial setting.